CN221434921U

CN221434921U - Device for heat dissipation of castings

Info

Publication number: CN221434921U
Application number: CN202323262901.1U
Authority: CN
Inventors: 吴军武; 王欢; 周象岱; 张兵
Original assignee: Huizhou Jisheng Precision Technology Co ltd
Current assignee: Huizhou Jisheng Precision Technology Co ltd
Priority date: 2023-11-30
Filing date: 2023-11-30
Publication date: 2024-07-30
Anticipated expiration: 2033-11-30

Abstract

The utility model discloses a casting heat dissipation device, which comprises a sand bed, wherein the upper plane of the sand bed is provided with a bedside along the edge, the bedside and the upper plane of the sand bed form a pill pool, heat conduction metal pills are arranged in the pill pool, and the lower part of the sand bed is provided with a water tank. The utility model has reasonable structural design and has the following beneficial effects: after the die set casting is poured, the die set casting is placed in a ball pool on a sand bed, and heat of a die set bottom casting hot joint is conducted to a lower water tank due to good heat conduction of the heat conduction metal balls, so that the die set bottom casting hot joint can be cooled, and shrinkage cavity caused by poor heat dissipation of the hot joint after pouring of the die set bottom casting is solved.

Description

Device for heat dissipation of castings

Technical Field

The utility model relates to the technical field of casting heat dissipation, in particular to a device for casting heat dissipation.

Background

In the investment precision casting production process, smelting and pouring are very critical processes, namely, molten steel is poured into the cavity of a shell mold which is dewaxed and roasted at high temperature, and after the shell mold is cooled, refractory materials such as shell mold slag and the like are removed, so that a molded casting is obtained. In general, the shell mold after casting has a high temperature, and the shell mold is placed on a sand bed and can be moved to the next working procedure after being cooled to normal temperature. During the cooling process, the bottom of the shell mold is contacted with and even buried in sand in the sand bed, so that the heat dissipation of the bottom of the casting is difficult. If the bottom of the casting is just the hot spot position of the casting, shrinkage defects can be generated at the position of the casting according to the principle of sequential solidification of the casting, and the casting is scrapped. Therefore, in order to solve the shrinkage cavity problem caused by poor local heat dissipation after casting, the heat dissipation problem of the hot joint part of the casting is solved.

At present, in order to solve the problem of shrinkage cavity caused by poor heat dissipation of a hot joint part after casting pouring, a forced cooling method is generally adopted, such as spraying water or blowing air to the hot joint part of a casting after casting by a shell mold, but because the water spraying or blowing air cooling surface is larger, the forced cooling is accurately implemented on a certain hot joint part without affecting other non-hot joint parts, the operation difficulty is larger, and therefore, the effect is generally poor. In addition, the auxiliary heat dissipation mode needs to be additionally operated by one person, and as a plurality of castings are usually arranged on the module, the hot joint parts of the single castings need to be forcedly cooled one by one during operation, so that the operation efficiency is very low. For the above reasons, there is a need for a solution to the problem of shrinkage cavity caused by poor heat dissipation at the hot junction after pouring of such castings.

Disclosure of utility model

The utility model aims to provide a device for heat dissipation of castings, which aims to solve the problem of shrinkage cavity caused by poor heat dissipation of hot joint parts after casting of the castings.

In order to achieve the above purpose, the technical scheme of the utility model provides a device for heat dissipation of castings, which comprises a sand bed, wherein a bed edge is arranged on the upper plane of the sand bed along the edge, a pill pool is formed by the bed edge and the upper plane of the sand bed, heat-conducting metal pills are arranged in the pill pool, and a water tank is arranged at the lower part of the sand bed.

Further, the pellets Chi Gaodu are greater than 10mm and the thermally conductive metal pellets have a diameter of 0.5mm to 2mm.

Further, the pellet Chi Gaodu is 15mm and the thermally conductive metal pellet is 1mm in diameter.

Further, the heat-conducting metal shot is a steel shot.

Further, the sand bed is a steel sand bed.

Further, the water tank is a hollow sealed cavity in the sand bed.

Further, the two ends of the water tank are respectively provided with a water inlet pipe and a water outlet pipe.

Further, the device also comprises a cooling tower, and the water inlet pipe and the water outlet pipe are communicated with the cooling tower.

Further, a water pump is arranged between the water inlet pipe and the cooling tower.

In summary, the device provided by the utility model has reasonable structural design, and has the following beneficial effects by applying the technical scheme of the utility model: after the module is poured, the module is placed in a pill pool on a sand bed, heat of a hot section part of a casting at the bottom of the module is conducted to a lower steel plate due to good heat conduction of the heat conduction metal pills, water in a water tank below the steel plate is circulating water, the steel plate conducts heat to the circulating water, the circulating water is cooled by an external cooling tower and pumped back to the water tank of the sand bed by a water pump, so that the water temperature in the water tank can be guaranteed not to rise, and the hot section part of the casting at the bottom of the module can be continuously cooled.

Compared with the traditional method for cooling the hot joint part accurately by manually and forcibly spraying water and blowing air to the casting joint part after the die set pouring, the method can be used for cooling the hot joint part at the lower part of the casting accurately, and the die set pouring can be directly put on a sand bed to finish the rapid cooling of the hot joint parts at the lower part of a plurality of castings, so that single castings do not need to be operated one by one like the manual forced cooling, and operators do not need to be additionally added, and the production efficiency is higher.

Drawings

FIG. 1 is a schematic view of a device for heat dissipation of castings according to the present utility model;

FIG. 2 is a schematic view of the structure of the sand bed of the present utility model;

FIG. 3 is a schematic illustration of a casting employing a heat sink of the present utility model;

Reference numerals illustrate: 1-a sand bed, 101-a pill pool and 102-a water tank; 2-a water inlet pipe; 3-a water outlet pipe; 4-a water pump; 5-a cooling tower; 6-hot spot.

Detailed Description

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the drawings in the embodiments of the present utility model, but the scope of protection of the present utility model is not limited.

In the present utility model, for a clearer description, the following description is made: the observer views fig. 1 with the front left side of the observer set to the front, the rear right side of the observer set to the rear, the rear left side of the observer set to the left, the front right side of the observer set to the right, the upper side of the observer set to the upper side, and the lower side of the observer set to the lower side, and it should be noted that the terms "front end", "rear end", "left side", "right side", "middle", "upper", "lower", etc. in this text indicate orientations or positional relationships based on the orientations or positional relationships set in the drawings, and are merely for convenience of clearly describing the present utility model, but do not indicate or imply that the structures or components to be referred to must have specific orientations, be constructed in specific orientations, and therefore should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," "third," "fourth" and the like are used for clarity or to simplify the description, and are not to be construed as indicating or implying a relative importance or quantity.

Referring to fig. 1 and 2, the utility model provides a device for heat dissipation of castings; the casting using the heat dissipating device of the present utility model is shown in fig. 3. The casting heat dissipation device comprises a sand bed 1, wherein the upper plane of the sand bed 1 is provided with a bedside along the edge, the bedside and the upper plane of the sand bed 1 form a pill pool 101, heat conduction metal pills are arranged in the pill pool 101, and the lower part of the sand bed 1 is provided with a water tank 102.

After the module is poured, the module is placed in the pill pool 101 on the sand bed 1, and the heat of the casting hot joint 6 at the bottom of the module is conducted to the lower part due to good heat conduction of the heat conduction metal pills, so that the casting hot joint 6 at the bottom of the module can be cooled, and shrinkage cavity caused by poor heat dissipation of the hot joint 6 after pouring of the casting is solved.

As a preferred embodiment of the present utility model, pellet pool 101 has a height of 15mm and thermally conductive metal pellets have a diameter of 1mm.

As a preferred embodiment of the present utility model, the thermally conductive metal pellets are steel pellets and the sand bed 1 is a steel sand bed.

The ball pool 101 with the depth of 15mm is welded above the sand bed 1, and the surface coverage of the steel balls can be kept smooth through manual adjustment, so that the heat dissipation effect of the heat joint 6 of the casting at the lower part of the module is continuously good. The problem of directly putting the module after pouring on the steel sheet, the steel sheet is heated the deformation after a long time, and some positions of module lower part foundry goods can not direct contact steel sheet and influence the heat dissipation is solved.

Specifically, the water tank 102 is a hollow sealed cavity inside the sand bed 1, and two ends of the water tank 102 are respectively provided with the water inlet pipe 2 and the water outlet pipe 3.

Specifically, the device also comprises a cooling tower 5, the water inlet pipe 2 and the water outlet pipe 3 are communicated with the cooling tower 5, and a water pump 4 is arranged between the water inlet pipe 2 and the cooling tower 5.

The water tank 102 in the sand bed 1 flows with circulating water, and the circulating water is pumped into the water tank 102 in the sand bed 1 again through the water pump 4 after being cooled by the external cooling tower 5, so that the water temperature in the water tank 102 can be ensured not to rise, and therefore the casting hot joint 6 at the bottom of the module can be continuously cooled, the heat dissipation speed of the casting hot joint 6 can be improved, and the shrinkage defect of the casting hot joint 6 is avoided.

Design principle: after the die set casting is poured, the die set casting is placed in the pill pool 101 on the sand bed 1, heat of the die set bottom casting heat joint 6 is conducted to the lower steel plate due to good heat conduction of the heat conduction metal pills, the water in the water tank 102 at the lower part of the steel plate is circulating water, the steel plate conducts heat to the circulating water again, the circulating water is cooled by the external cooling tower 5 and then is pumped back to the water tank 102 of the sand bed 1 through the water pump 4, and therefore water temperature in the water tank 102 can be prevented from rising, and the die set bottom casting heat joint 6 can be continuously cooled. After the heat dissipation condition of the casting hot joint 6 at the bottom of the module is changed, the shrinkage defect of the casting produced later does not occur any more. The reason why the pill pool 101 with the depth of 15mm is welded without directly using the steel plate above the water tank 102 of the sand bed 1 is that if the cast module is directly placed on the steel plate, the steel plate can deform due to long-term heating, so that the steel plate is uneven, and when the cast module is directly placed on the steel plate, some parts of the cast lower part of the module cannot directly contact the steel plate, thereby influencing the heat dissipation effect. The steel shot is granular steel sand with the diameter of 1mm, and the surface coverage of the steel shot can be kept smooth through manual adjustment, so that the heat dissipation effect of the heat joint 6 of the casting at the lower part of the module is obvious.

While the foregoing is directed to the preferred embodiments of the present utility model, it will be appreciated by those skilled in the art that changes and modifications may be made without departing from the principles of the utility model, such changes and modifications are also intended to be within the scope of the utility model.

Claims

1. A device for heat dissipation of castings, said device comprising a sand bed, characterized in that: the sand bed is characterized in that a bed edge is arranged on the upper plane of the sand bed along the edge, a pill pool is formed by the bed edge and the upper plane of the sand bed, heat conduction metal pills are arranged in the pill pool, and a water tank is arranged at the lower part of the sand bed.

2. A device for heat dissipation of castings according to claim 1, wherein: the diameter of the heat conduction metal pellet Chi Gaodu is 0.5mm-2mm, and the diameter of the pellet Chi Gaodu is more than 10 mm.

3. A device for heat dissipation of castings according to claim 2, wherein: the pellets Chi Gaodu were 15mm and the thermally conductive metal pellets were 1mm in diameter.

4. A device for heat dissipation of castings according to claim 1, wherein: the heat conduction metal shot is a steel shot.

5. A device for heat dissipation of castings according to claim 1, wherein: the sand bed is a steel sand bed.

6. A device for heat dissipation of castings according to claim 1, wherein: the water tank is a hollow sealed cavity in the sand bed.

7. A device for heat dissipation of castings according to claim 1 or 6, wherein: the two ends of the water tank are respectively provided with a water inlet pipe and a water outlet pipe.

8. The apparatus for heat dissipation of castings according to claim 7, wherein: the device also comprises a cooling tower, and the water inlet pipe and the water outlet pipe are communicated with the cooling tower.

9. The apparatus for heat dissipation of castings according to claim 8, wherein: a water pump is arranged between the water inlet pipe and the cooling tower.